断层破碎带光面爆破技术研究与应用Research and Application of Smooth Blasting Technology in Fault Fracture Zone
韦丹,黄海华,彭四佑,王隆声
摘要(Abstract):
为研究断层破碎带光面爆破合理的光爆层厚度、孔距、线装药密度等爆破参数以及装药结构,应用工程爆破经验公式计算出光面爆破参数,通过现场施工爆破,采用对比分析方法,对比爆破后的爆破效果,分析影响断层破碎带光面爆破效果的因素,通过对比分析对爆破参数进行优化,改善装药结构,确定断层破碎带光面爆破合理的爆破参数以及装药结构。通过研究分析与现场应用表明,当药卷规格选用?60 mm×400 mm,孔距为1.2~1.5 m,光爆层厚度为2.5~3.0 m,线装药密度为1.2~1.4 kg/m,装药结构采用间隔装药长度为0.6~0.8 m不耦合装药结构时,断层破碎带光面爆破效果较为理想,爆破后坡面平整、边坡稳定性较好;当药卷规格选用?60 mm×600 mm,孔距为1.2~1.5 m,光爆层厚度为2.5~3.0 m,线装药密度为0.7~1.0 kg/m,装药结构采用孔口充填1 m后留3.0~4.0 m不装药空气柱,间隔装药长度为1.5~2.0 m不耦合装药结构时,断层破碎带光面爆破效果最为理想,爆破后坡面平整、边坡稳定性好,而且后者比前者工程经济效果明显。
关键词(KeyWords): 光面爆破;爆后分析;孔距;光爆层厚度;线装药密度;装药结构
基金项目(Foundation):
作者(Author): 韦丹,黄海华,彭四佑,王隆声
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